Update README.md

Author: yudgugger

README.md

@@ -109,6 +109,12 @@ See the <a href="https://github.com/CEA-MetroCarac/PySSPFM/tree/main/doc">docume
 
 ## Installation
 
+### From PyPI
+
+```bash
+pip install PySSPFM
+```
+
 ### From GitHub
 
 #### With poetry
@@ -142,6 +148,6 @@ The settings and parameters folder (containing files with .json and .toml extens
 <p align="justify" width="100%">
 In the case you use this library for your work, please think about citing it: <br>
 &#8226 H. Valloire, P. Quéméré, N. Vaxelaire, H. Kuentz, G. Le Rhun, Ł. Borowik, "Enhancing ferroelectric characterization at nanoscale: A comprehensive approach for data processing in spectroscopic piezoresponse force microscopy", J. Appl. Phys, 21 May 2024, 135 (19): 194101, DOI: <a href="https://doi.org/10.1063/5.0197226">https://doi.org/10.1063/5.0197226</a> <br>
-&#8226 Hugo Valloire, Patrick Quemere, 2024, November 22, PySSPFM (Version 2024.11).
+&#8226 Hugo Valloire, Patrick Quéméré, 2024, November 22, PySSPFM (Version 2024.11).
 </p>